THE PARASITIC EXOASi'KAE. 



155 



while the stone, including the embryo, remains stunted. (Fig. 

 49.) The "pocket-plums" (fools or bladder-plums) dry up, and 

 remain hanging on the tree till autumn. 1 > P.ary found <>n 

 the plum a withering of calyx and stamens resulting frmn the 

 development of the hymenium of this E.i-<>nxrux ; on the liird 

 cherry, according to Magnus and Wakker, enlargemenl <>\' the 

 stamens occurs. Sometimes a considerable thickening and 

 twi-ting of the young shoots takes place, and their leave-; 

 curl up. 



Fi'.. 1- Esnascvt pruni. Twi^ ..f Hum, with four !. f..rmr.l ln,r 

 !i'inn:il ],lmn is ji.irtully liicMi-n, tin- <>tlirr i> in the- mi<l<llf. ' n.itui:il 

 (v. TuLuMi .l.-l.) 



The mycelium liiln-] natrs in the snfi ba<t -f ih.- t \vi-s. and 

 procci-ds iht-iiei- in sprini; into ymm^ shnot< and ovaries. 

 Ai-cunlin^ tn I) ( - Ktrv, i he infected ovarirs dnublf their 

 in twn da\ <, and are lull -I-MUII in ci-ht days. Thr a-ri t'urm 

 ;" 'l.Hr layi-r under tin- cntiel<- <>f the ovary, and linally 

 rupture it. 



